1. Cardiology Department, Bern University Hospital (Inselspital), Bern, Switzerland
2. Pulmonology Department, Zurich University Hospital (USZ), Zurich, Switzerland
3. Cardiology Department, Kantonspital St Gallen, St Gallen, Switzerland
4. Cardiology Department, Geneva University hospital (HUG), Geneva, Switzerland
5. Cardiology Department, Neuchâtel hospital network, site de Pourtalès, Neuchâtel, Switzerland
6. Cardiology Department, Lausanne University Hospital (CHUV), Lausanne, Switzerland